54 GMC-I Gossen-Metrawatt GmbH
25 Maintenance
Attention!
!
Disconnect the instrument from the measuring cir-
cuit before opening the instrument to replace the
batteries or the fuse!
25.1 Batteries
Note!
☞
Removal of Batteries for Long Periods on Non-Use
The integrated quartz movement requires auxiliary
power even when the instrument is switched off
(except for METRA HIT 22S), and thus drains the
batteries. We recommend removal of the batteries
for lengthy periods of non-use (e.g. vacation). This
prevents excessive batteries discharge and leakage,
which may result in damage to the instrument.
Attention!
!
Battery Replacement for METRA HIT 22M/26M/MIL
Stored measurement values are deleted when the
battery is replaced. We recommend uploading data
to a PC with the help of METRAwin
®
10/METRAHit
®
software before replacing the battery, in order to
prevent data loss.
Operating parameters remain in memory, although
date and time must be reset.
You can check current battery condition in the “Info” menu:
SEt inFo ↵ bAtt ↵ X.X V.
Before initial start-up, or after storage of your instrument,
make sure that no leakage has occurred at the instrument
battery. Repeat this inspection at regular intervals.
If battery leakage has occurred, electrolyte from the battery
must be carefully and completely removed with a damp
cloth, and a new battery must be installed before the
instrument can be placed back into operation.
If the “ ” symbol appears at the LC display, you should
change the battery as soon as possible. You can continue
to take measurements, but reduced measuring accuracy
may result.
The instrument works with two 1.5 V batteries per IEC R6
or IEC LR6, or with corresponding NiCd storage batteries.
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